Trip-switch.



G. A. DE GUIRE.

TRIP SWITCH.

APPLICATION FILED APR. 30. 1917.

Patented Mar; 11,1919.

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G.. A. DE GUIRE.

TRIP SWITCH.

APPLICATION FILED APR- 30, 1917- Patented Mar. 11,1919.

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G. A. DE GUIRE.

TRIP SWI TCH.

A'PPLICATION FILED APR.30,1917.

1,296,636 Patented Mar. 11, 1919.

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GEORGES A. DE G'UIRE, 0F MONTREAL, QUEBEC, CANADA.

TRIP-SWITCH.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed April 80, 1917. Serial No. 165,460.

To all whom it may concern:

Be it known that I, GEORGES A. DE GUIRE, a subject of the King of Great Britain, residing at Montreal, Quebec, Canada, have invented new and useful Improvements in Trip-Switches, of which the following is a specification.

The invention to be hereinafter described relates to trip switches.

In order to more clearly disclose the construction, operation, and use of the invention, reference should be hadto the accompanying drawings forming part of the present application. Throu hout the several figures of the' drawings, hke reference characters designate the same parts.

In the drawings Figure 1 is a side elevation of one form "of the invention;

Fig. 2 is a left hand view of Fig. 1;

Fig. 3 is a view similar to Fig. 1, showingrthe switch closed;

ig. 4 is a side view of the wedge'plate,

removed;

Fig. 5 is a top plan view of F1g. 4;

Fig. 6 is a slde elevation of the flexible ti Fig. 7 is a top plan view of the same;

Fig. ,8- is a side view of the wear point; Fig. 9 is a left hand end view of Fig. 8; Fig. 9 is a side elevation of a second form with contactor open;

, opposite ends Fig. 10 is a side elevation of another form; and, a

Fig. 11 is a left hand end view of Fig. 10.

The main objects of the invention are to provide a simple, efficient, compact, economical, and positively acting automatic switch for either automatically closing a circuit, or automatically breaking a circult.

As illustrating the invention, two forms of the invention are disclosed. a

Referring to the drawings in detail, F gs. 1-9 show apreferred form for breaking a circuit which is normall complete or closed. In the drawings, 1 indicate terminals of an electric circuit which, normally, is closed or complete through contactor 2. Preferably, these parts are mounted in an oil cup 3, through the cover. of which extend suitable conductors connected at their to the terminals 1 and the circuit wires, respectively. Contactor 2 is carried on the lower end of a longltudmally slidable rod 4, the upper end of which acts I as a core for the coil 5 of an electroma et which may be intermittently energize by a circuit 6. A coil spring 7 disposed about rod 4, between contactor' 2 and the oil cup cover through which the rod slides, tends to keep the contactor, normall ,in operative I holds the arm, normally, inoperative positlon. On the shorter arm, near the angle,

is a pin or stud'11 which enga es under a shoulder 12 on the lower end 0. a plate 13 carried by rod 4. Thus, as rod 4 is raised by coil 5, spring 10 will snap arm 8 with its pin 11, into holding position beneath shoulder 12, keeping the contactor raised. The outer end of the long arm of the lock is bifurcated to receive the shank 13' of a forked tip 14 which carries a removable triangular wear point 15. Shank 13' is pivoted in arm 8 by a small pivot pin 16. The upper corners of the side walls adjacent to the bifurcated end of arm 8 are rounded as 17 to permit the tip 14 to rock upwardly broken by energizing the coil 5, as previously stated, andthat it is desired to re lease the contactor 2' to the action of spring 7. It is only necessary to force tip 14 downwardly, thereby disengaging pin 11 moves contactor 2 onto the terminals, closing the circuits.

Plate 181s formed with a wedgin or inclined edge 21. .As the rod 4 trave s down from. shoulder 12. Instantly, the spring 106 wedge 21 engages pin 11 and forces arm 8 110 departing from the field and scope of the into swing backward to carry the tip 14 backward and downward out of the path of whatever device has engaged and operated it. In Figs. 1-9 a reciprocable bar or tube 22 with tip engaging pins 23 is used. In order that the pins 23 may engage tip 14, as the tube 22 moves down, they must, of course, also engage the tip when moving up, if the tip is in the full line position. It is to take care of this contingency that the tip 14 is mounted to rock upwardly, as previously explained, so that the pinsengaging it in their upward travel will simply snap it back and pass freely by, all as clearly shown in dotted lines in Fig. 1.

The pins 23 are arranged in line at suflicient intervals to permit the upward movement of pivoted tip 14 from bringing it against the pin next above it. Th reciprocation of bar 22 or its movement either upward or downward may be arranged to occur at any desired intervals of time and may be effected by any proper means. Pivoted arm 8, havingpin 11, and plate 13, having shoulder 12, constitute a latch, holding the contactor 2 raised and its circuit open, after the magnet-circuit 6 ceases to operate. Spring 10 makes it a spring latch. While the latch is engaged arm 8 presents tip 1 in the path of pins 23. Contactor 2 is held by said latch against descent until the downward movement of bar 22 causes one of the pins 23 to move arm 8, shifting pin 11 out of engagement with shoulder 12. There is no obstruction by pins 23 or any other part at any stage of the operation.

The second form, shown in Figs. 10 and 11 is adapted to operate oppositely to that of the first form. That is, the circuit completed by it is normally closed, but is broken by tripping the trip arm 108. This trip arm may be operated by pins, as in the first form, or by a wedge block, as shown in Fig. 10, or in any other suitable way. When tripped, the coil spring 107 will force the contactor 102 away from its seat, to open the circuit. The L shaped arm 108, in this form is rigid and has no flexible tip, as it is assumed that the coil will not be energized before the wedge has been returned to its original position. Consequently, arm 108 will be in its safety position, as previously explained in connection with the first form, during the return travel of the wedge bar. The con struction, and operation of the other parts of the second form are the same as in the first form and therefore need not be further detailed here.

It is thought that the construction, operation, and use of the invention will be clear from the preceding detailed description. Changes may be made in the construction, arrangement, and disposition of the several parts of the invention, without in any way vention and it is meant to include all such within this application wherein only preferred forms have been disclosed, by way of illustration.

Having thus described my invention, what I claim and desire to protect by Letters Pattent is 1. A trip switch comprising, a movably mounted contactor, means for movin said contactor in one direction, magnetical y 0perated means for returning it, a pivoted arm, a part movin with said contactor and engaged by sai arm for locking said contactor against return and means for releasing said arm.

2. A trip-switch comprising a movably mounted contactor, means for moving said contactor in one direction, means for returning it, a pivoted arm, a part moving with said contactor and engaged by sald arm to lock the latter against return, and means for releasing said arm.

3. A trip-switch comprising a movably mounted contactor, means for moving said contactor in one direction, means for returning it, a movable part arranged to lock said contactor against such return, and a longitudinally operated bar carrying a laterally projecting device arranged to be moved into contact with said movable looking part and to actuate the same for freeing sald contactor.

4. A trip-switch comprising a movably mounted contactor, an electro-magnet for moving said contactor in one direction, a spring for returning it, a pivoted arm for lockin it against such return, and a longitudina ly operated bar carrying a laterally extending device arranged to be moved into contact with said movable locking part and to actuate the same for freeing said contactor.

5. A trip-switch comprising a movably mounted contactor, means for moving said contactor in one direction, means for returning it, movable means for looking it against such return, and a longitudinally operated bar carrying a longitudinal series of pins, any on of which may act on said locking means to free said contactor when the bar moves in one direction.

6. A trip switch comprising an electromagnet, a rod actuated in one direction thereby,

a contactor carried by said rod, a spring adapted to return said contactor, a trip arm adapted to hold said rod against return movement and means for tripping said arm actuated independently of said electromagnet.

7. A trip switch comprising, an electromagnet, a rod actuated in one direction thereby, a contactor carried by said rod, a spring adapted to return said contactor, a trip arm adapted to hold said rod against return movement, means for swinging said trip aaeepse arm to operative position and means for tripping said arm actuated independently of said electromagnet.

8. A trip switch comprising, an electromagnet, a rod actuated in one direction thereby, a contactor carried by said rod, a spring adapted to return said contactor, a trip arm adapted to hold said rod against return movement, means automatically swinging said trip, arm to operative position and a reciprocating bar carrying means for acting on said trip arm while the latter is in such position.

9. A trip switch comprising, an electromagnet, a rod actuated in one direction thereby, a contactor carried by said rod, a spring adapted to return said contactor, a trip arm adapted to hold said rod against return movement, means for swinging said trip arm to operative position, and a reciprocating bar carrying means actuated independently of said magnet for tripping said trip arm.

10. A trip switch comprising, an electromagnet, a rod actuated in one direction thereby, a contactor carried by said rod, a spring adapted to return said contactor, a trip arm adapted to hold said rod aginst return movement, means for swinging said triparm to operative position, means actuated independently of said magnet for tripping said ar m, and a part moving with said contactor for moving said trip ..arm to a safety position.

11. A trip switch comprising, an electromagnet, a rod actuated in one direction thereby, a contactor carried by said rod, a spring adapted to return said contactor, a trip arm adapted to hold said rod against return movement, means for swinging said trip arm to operative position, means actuated independently of said magnet for trip ping said trip arm, and means for automatically moving said trip arm to a safety position.

' 12. A trip switch comprising, an electromagnet, a rod actuated in one direction thereby, a contactor carried by said rod, a plate carried by said rod and provided with a shoulder and an inclined edge, a spring for actuating said rod in the opposite direction, a trip arm provided with a pin to engage said shoulder and said inclined edge successively, means for swinging said arm to operative position, and means for tripping said arm.

13. A trip switch comprising, a movably mounted contactor, means for moving said contactor in one direction, means for returning said contactor, a pivotally mounted arm adapted to lock said contactor against return, a tip pivotally mounted in said arm, and a longitudinally reciprocating bar, carrying means adapted to engage said tip and trip said arm.

14:. A trip switch comprising, a movably mounted contactor, means for moving said contactor in one direction, means for returning said contactor, a pivotally mounted arm adapted to lock said contactor against return, a tip pivotally mounted in said arm, means actuated independently of said contactor-moving means for engaging said tip to trip said arm, and means for limiting the movement of said tip in one direction.

15. A trip switch comprising, a movably mounted contactor, means for moving said contactor in one direction, means for returning said contactor, a pivotally mounted arm adapted to lock said contactor against return, a tip pivotally mounted in said arm, means actuated independently of said contactor-moving means adapted to engage said tip and trip said arm, and means for yieldingly maintaining said tip in alinement with its arm.

16. A trip switch comprising, a movably mounted contactor, means for moving said contactor in one direction, means for returning said contactor, a pivotally mounted arm adapted to lock said contactor against return, a tip pivotally mounted in said arm, a longitudinally reciprocating bar carrying means adapted to engage said tip and trip said arm, means for limiting the movement of said tip in one direction, and means for yieldingly maintaining said tip in alinement with its arm.

Signed at Montreal this 24th day of April 191 

